DW

D. F. Walters

DI Dresser Industries: 1 patents #6 of 56Top 15%
📍 Dallas, TX: #39 of 217 inventorsTop 20%
🗺 Texas: #432 of 2,272 inventorsTop 20%
Overall (1982): #71,238 of 81,411Top 90%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4330158 Rotary rock bit with improved thrust flange — 1982-05-18